# num = 3
# def fun():
#     num = 5
#     print('函数内局部变量num的值:',num)
# fun()
# print('函数外局部变量的值:',num)

# num = 5
# def fun():
#     global  num
#     num += 1
#     print('函数内num的值：',num)
# fun()
# print('函数外nun的值:',num)

# def outer():
#     num = 1
#     def inner():
#         nonlocal  num
#         num = 2
#         print('inner函数中num的值：',num)
#     inner()
#     print('outer函数中的num值:',num)
# outer()

# stu = [{'num':'201001','name':'王五','score':89},
#        {'num':'201802','name':'刘军','score':95},
#        {'num':'201803','name':'李梦','score':85}]
# stu.sort(key=lambda  x: x['score'])
# for s in stu:
#     print('学号:',s['num'],'姓名:',s['name'],'成绩:',s['score'])